Find out what’s wrong with your screen
105 free display tools that run entirely in your browser. No account, no download, no waiting.
- Nothing to install
- No account
- No cookies
- Works on phones
Start with these
Quick first checks for any display.
Dead Pixel TestStep through eight full-screen colors at your own pace to find dead or stuck pixels.Monitor TestA guided check of six full-screen fields, one at a time, with a plain summary of what you saw.White Screen#FFFFFFClean a monitor, spot dead pixels, or light a video call.Black Screen#000000Check for backlight bleed, light leaks, and stuck pixels.Backlight Bleed Test#000000A pure black full screen, best in a dark room, that reveals corner glow and edge light leaks.
Tool categories
10 categoriesDisplay Diagnostics19 ToolsFind dead pixels, backlight bleed, and other panel faults.Solid Color Screens18 ToolsFull-screen solid colors for checking, cleaning, and lighting.Lighting & Camera6 ToolsUse your screen as a soft light for calls and photos.Audio & Focus17 ToolsBackground noise, timers, and clocks for focused work.Peripherals & Input Testing10 ToolsCheck keyboards, mice, touchscreens, and other inputs.Screen Info6 ToolsSee your screen resolution and other display details.Color Utilities7 ToolsPick, convert, and preview colors.Screensavers & Ambient9 ToolsFull-screen screensavers and ambient displays.Wallpaper & Download4 ToolsMake and download simple wallpapers.Prank & Simulator9 ToolsHarmless full-screen imitations, such as fake update screens.
Guides
All guides →Written guides for testing, fixing, and understanding screens, each one leading to the tool that does the job.
Pillar guideHow to Test a MonitorWhich field to show first, why the order matters, and what to do when one fails.